Twenty First Century Books

Home | Tesla Writings | Tesla Patents | Tesla FAQ | Tesla On AC | Tesla Books | Glossary | Links
Bookstore | Newsletter | Wholesale Book List | Contact Us
| Reference Section | Search | Site Map

   Previous Q & A | Next Q & A | Questions | Table of Contents 

I am teaching a class on telephone wiring and was wondering if you could answer this question.  Why does the gauge # decrease as diameter increases in wires?  Nobody seems to know, thanks, Jon

In general a wire size gauge number corresponds to the number of operations involved in drawing a wire, a larger figure representing more operations resulting in a smaller diameter. The American Wire Gauge (AWG) copper wire gauge is a logarithmic scale base on a wire's cross section, each 3-gauge step in size corresponding to either a doubling or halving of the area.  Note that the doubling of a wire's cross sectional area halves its' resistance.  In the Colorado Springs Notes 1899-1900 Tesla refers to wire size using the "Brown & Sharpe" wire gauge which is equivalent to AWG.

   Top | Previous  Q & A | Next  Q & A | Questions

Home | Tesla Writings | Tesla Patents | Tesla FAQ | Tesla On AC | Tesla Books | Glossary | Links
Bookstore | Newsletter | Wholesale Book List | Contact Us
| Reference Section | Search | Site Map

 

 

21st Century Books
Post Office Box 2001
Breckenridge, CO 80424-2001

1998-2013 Twenty-First Century Books, Colorado
All Rights Reserved